Notes with worthy tutorials
Properties of Constructor Function: Following are some properties of Constructor Function They will have the same name as of their class. They should be declared in the public section. They are executed automatically when objects are created. They do not have return types, not even void and thus they can’t return values. They can’t be … Read more
Constructor:A constructor is a ‘special’ function whose task is to initialize the objects of its class. It is special because its name is the same as the class name. A constructor is executed whenever object of its class is created. It is called constructor because it constructs the values of data members of the class. … Read more
Properties of Static Member Function: Following are some properties of Static Member Function A static member function can only have access to other static data members and functions declared in the same class. A static member function can be called using the class name with a scope resolution operator instead of object name. Global functions and … Read more
Static Data Member and Difference with Non-static Data Member: In general when we declare some objects of a class, each object is allocated with memory space for each variable of the class separately under them as given below, But in the case of static data member only one memory location will be allocated and that … Read more
Inline Function:Every time a function is called, it takes a lot of extra time in executing a series of instructions for tasks such as jumping to that function, saving registers, pushing arguments into the stack and returning to the calling function. Also when a function is small a large percentage of execution time may be … Read more
Friend Function: Friend functions are those functions which can access all the functions and variables of a class though it is not a member function of that class. Actually to share a function among two or more classes friend functions are used. If it is declared so, then it will able to access all variables … Read more
Return of an Object from a Function: Yes it is possible to return an object from a function. An object can be returned to the call of its function by another object. For the justification considering the following program, //Returning of object#include<iostream.h>class myclass{ int i; public: void set_i(int n){ i=n; /*Ln 3*/ } int get_i(){ … Read more
Passing Objects:An object can be used as a function argument in the following two ways, pass-by-value pass-by-reference Using the first option given above we pass the value of an object to a function where the value of the used object will not change, but only be used. Use of the second will change the object … Read more
Class:Class is an user-defined data type which works same as the built in data types. A class contains some variables and functions to access those variables. These stay tied together and can not be accessed by other functions of other classes without permission. In that way data of a function … Read more
#include<iostream>:This is a directive which causes the preprocessor to add the contents of iostream, which is a header file and must be added above all of a program where input/output statements has been used. We will include the header file with the statement #include <iostream> The iostream package automatically defines a variable (an … Read more